Step 1

Prepare a low-temperature slow cooker and vacuum machine

Step 2

Sprinkle the steak with salt and black pepper on both sides, put it in a vacuum bag and add the rosemary to vacuum

Step 3

Put it in a low temperature slow cooker and cook at 57 degrees for 4 hours

Step 4

Take the steak out of the bag and stick it with crushed rainbow pepper

Step 5

Pour olive oil into the pot and fry on both sides over high heat to color